In meiosis I, sister kinetochores must attach to the same pole and homologous kinetochores must attach to the opposite poles. While In mitosis, sister kinetochores must attach to the opposite poles. This is the key division that reduces the ploidy of cells in meiosis.
What is Mitosis?Mitosis may be characterized as a type of cell division through which each parental cell is successfully divided into two genetically identical daughter cells. These daughter cells are diploid in nature. Somatic cells are generally divided through this process.
While in meiosis, each parental cell is successfully divided into four genetically unidentical daughter cells. These daughter cells are haploid in nature. Germ cells or gamete cells are generally divided through this process.
A key difference in both processes, however, is that during meiosis, each of these phases occurs twice. Each with half the number of chromosomes as a parent cell.
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An increase in the concentration of ATP in a muscle cell is a direct result of which life function? ...?
Final answer:
The increase in ATP concentration in muscle cells is primarily associated with muscle contraction, powered by mitochondria within the cells. During intense exercise, ATP can also be produced anaerobically, resulting in lactic acid as a byproduct.
Explanation:
An increase in the concentration of ATP in a muscle cell is a direct result of the life function known as muscle contraction. ATP, or adenosine triphosphate, is the primary energy currency of the cell and facilitates various bodily functions including muscle contractions, nerve signal transmission, and the absorption of nutrients in the gastrointestinal tract.
Muscle cells are equipped with a high concentration of mitochondria to produce ATP, ensuring that the demand for energy during muscle activity can be met. During intense exercise, when there is not enough oxygen for aerobic respiration, muscle cells produce ATP anaerobically, leading to the production of lactic acid alongside the ATP.
The fluid mosaic model describes the structure of the plasma membrane. Embedded within the plasma membrane are proteins and carbohydrates that contribute to the term mosaic. Glycolipids and glycoproteins are examples of carbohydrates from on the surface of red blood cells that determine ABO blood type. These glycoproteins and glycolipids are important for
A. Cell to cell identification
B. Active Transport
C. Diffusion
A. Cell to cell identification
what are some important reasons for studying biology
what are 4 phrases describing osmosis
Answer
The phrases would be;
-A passive transport
-Movement of water molecules
-Through a semipermeable membrane
-From a higher concentration to a lower concentration
Explanation;Osmosis is the process by which water moves from its higher concentration to a region of its lower concentration through a semipermeable membrane. Osmosis is an example of passive transport, since it does not require energy like the case of active transport.For example, when a cell is put in a hypotonic solution, a solution with more solvent concentration, the cells absorbs water from the solution through osmosis and increases in size.Which component of blood protects us from invading foreign material?
The components of blood that protect us from invading foreign materials are White Blood Cells, certain proteins in the plasma such as antibodies, antigens, and platelets.
Explanation:The component of blood that protects us from invading foreign material is primarily the White Blood Cells (WBCs), or leukocytes, as part of the immune response. WBCs identify and target invading bacteria, viruses, and other foreign organisms. Not only do they combat foreign invaders, but they also recycle waste components such as old Red Blood Cells.
In addition to WBCs, certain proteins in the plasma, such as antibodies and cytokines, defend the body against infection and other threats. For instance, when damage occurs to blood vessels resulting in bleeding, blood platelets and coagulation factors present in the plasma interact to seal the ruptured areas, preventing further blood loss and protecting the body.
Another important component, called antigens, triggers an immune response when foreign antigens appear in our blood. Proteins known as antibodies, produced by certain B lymphocytes called plasma cells, attach to these foreign antigens to neutralize them.
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During which three phases of mitosis are individual chromosomes no longer visible?
Unicellular prokaryotes,called___________, are adapted to living in a remarkable number of different places. ...?
The explanation which Isaac Newton gave for the equal and opposite reaction to every applied force is summarized in:
A.1st Law
B.2nd Law
C.3rd Law
D.Universal Gravitation
For the DNA base sequence GGG what is the mRNA codon? What is the tRNA codon that binds to the mRNA codon and what is the correct amino acid that is coded by the base sequence? ...?
Which statement is the best example of pseudoscience?
Scientists have observed many constellations in our universe.
Mary thinks her astrological sign, Leo, is a perfect fit for her personality.
Satellites found in space record images of events that take place on the Earth.
The employees at the observatory use telescopes to study the stars.
Answer:
B
Explanation:
Mary thinks her astrological sign, Leo, is a perfect fit for her personality.
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Suppose that Louisa is cut by broken glass during a lab accident. Which is the proper place to dispose of the paper towels that are used to clean up the blood?
broken glass container
hazardous waste container
spilled chemicals container
classroom waste container
Answer: hazardous waste container
Explanation:
A hazardous waste container is the container where hazardous waste which have been used in clinical trials, hospital use, nuclear power plants, hazardous chemicals from the laboratory can be stored, treated and transported.
Biohazardous waste, is the infectious waste which can be grown over the biological material like tissues, body organs, blood, urine, blood transfusion tube and others.
The paper towel will contain blood which is subjected to the growth of the pathogens and can cause huge infection hence, it is the example of material which should be disposed off in the hazardous waste container.
An experiment in which only one variable is changed is a(an) __________ experiment.
A. randomized
B. natural
C. double blind
D. controlled
Answer;
D. controlled
An experiment in which only one variable is changed is a controlled experiment.
Explanation;
-A control experiment is an experiment where the researcher only changes one variable at a time in order to isolate the results.
In a controlled experiment, most conditions are constrained so that they do not change. One or two other conditions are then changed and measured by the experimenter. These are known as the independent variables.
For example; An experiment where all subjects involved in the experiment are treated exactly the same except for one deviation.
An experiment that is only one variable that has changed is a controlled variable experiment.
the independent/controlled variable
is a variable that can be changed according to the purpose of the experiment
Further explanation
The development of chemistry begins with experiments that consist of chemical stages/processes. This method is a form of the scientific method that is commonly used by scientists in carrying out experiments.
Several experiments, trials, and errors will be carried out to test the hypothesis until the expected results are in the predetermined problem at the outset.
Variables, which can be determined in 2:
1. independent variable, which is a variable that can be changed according to the purpose of the experiment
2. fixed variable, i.e. variable whose value is constant and observed to determine changes in independent variablesWe can control independent variables according to the results of the experiments to find conditions that have the most optimal results so that the goals of the problems that have been set will be achieved.
The continuous investigation is so that the control variables are not out of the problem boundary
So the right choice is a controlled variable
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Keywords: scientific method, fixed variable, an independent variable
Too much logging in the Oyamel fir forests could lead to the eastern monarch butterfly going extinct because _______. a. the entire population of the species spends winter in Oyamel c. the winters are too cold in Oyamel b. the butterflies breed in the Oyamel fir trees d. the butterflies feed on the Oyamel fir tree
Answer: a. the entire population of the species spends winter in Oyamel.
Monarch butterfly cannot survive in extreme climatic conditions. These butterflies spend winter months in Oyamel fir forest of Mexico. Oyamel forest situated in mountain hills provides an ideal climate for their survival. Here, the temperature ranges from 0 to 15 degree Celsius. If the temperature is low, the monarch butterflies uses their fat reserves. The dense canopy of trees in Oyamel fir forest drives heat from the ground at night and protect these butterflies from rain, wind and snow. The supply of excess of water as in the case of water logging condition can make trees susceptible to diseases and pests. In winter majority of monarch butterfly concentrate over the same region of Oyamel fir forest. Such water logging conditions will make the forest unsuitable for survival and further may lead to extinction of these butterflies.
Answer:
A
Explanation:
What is the source of a stream called?
A. Reservoir
B. Creek
C. Floodplain
D. Headwaters
Headwaters is the source of a stream.
What is Headwaters?A stream or river's headwaters are its starting point. They are situated at the farthest point from the water body's outlet or point of confluence. These mountainous and often forested regions are where two thirds of California's surface water supply is produced.
Although the physical, biological, and chemical characteristics of a river's headwaters can have a significant impact on its downstream flows, the size and strength of a river's flow are not always controlled by its origin.
All along the length of the body of water, there are creatures, sediments, minerals, pollutants, and other compounds that have either been added by runoff or are naturally present in these river sources.
Therefore, Headwaters is the source of a stream.
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Explain how independent assortment occurs in cells and explain its importance.
Answer: Independent Assortment is the second law of inheritance.
Traits are passed from parents to offspring independently of one another.
Independent assortment is random and occurs during Metaphase 1 of meiosis.
These are two possible alignments for the chromosomes.
Since the alignments are random and not assigned, genetic variation occurs.
Explanation: On Ed
Independent assortment occurs during meiosis when homologous chromosomes line up randomly, allowing for genetic variation. Recombination through crossover events further contributes to independent assortment. This ensures that alleles on a given chromosome are not always inherited together, promoting genetic diversity.
Explanation:Independent assortment occurs during meiosis when homologous chromosomes line up in random orientations during metaphase I. Each gamete can contain any combination of paternal and maternal chromosomes, resulting in genetic variation. Recombination through crossover events also contributes to independent assortment by exchanging genetic material on homologous chromosomes. This ensures that alleles on a given chromosome are not always inherited together, allowing for more genetic diversity.
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The physical need to eat food is called A. hunger B. appetite C. Psycological desire. D. nutritional value A?
The physical need to eat food is referred to as hunger. Appetite, psychological desire, and nutritional value are separate aspects related to food consumption. Hunger is a body's physical demand for energy.
Explanation:The physical need to eat food is primarily driven by a body's demand for energy and is known as hunger. This is different from appetite, which is the desire to eat food often prompted by external factors such as sight, smell, or thought of food, not necessarily due to physical need. Psychological desire could be a craving to eat a specific kind of food and nutritional value refers to the benefits we get from the food we eat.
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Scientists use observations and data to form and test
Scientists use observations and data to form and test hypotheses. They observe a phenomenon, form a hypothesis about why it occurs, and use data to test its validity through experiments, making observations and data the backbone of the scientific method.
Explanation:Scientists use observations and data to form and test hypotheses. These hypotheses are proposed explanations for specific phenomena that have been observed. A scientist makes an observation, forms a hypothesis about why that phenomenon occurs, and then uses data to test the validity of the hypothesis.
For example, a scientist may observe that certain plants grow better in certain types of soil. They might form a hypothesis that the nutrients in the soil are causing this difference. To test this hypothesis, they would conduct an experiment comparing plant growth in different types of soil, carefully recording and analyzing the data from this experiment.
In this way, observations and data form the backbone of the scientific method, which is a systematic and logical approach to discovering how things in the universe work.
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When a species is made up of different smaller groups, each of those smaller groups is known as a _____.
Scientists believe plant life moved from water to land and that plants evolved from multicellular _____.
plankton
green algae
protists
protozoa
How can you use composition and texture to identify common rocks?
What processes can transform metamorphic rock into sediment?
A.
weathering and erosion
B.
heat and pressure
C.
compaction and cementation
D.
crystallization and solidification
What processes can transform metamorphic rock into sediment?
A.
weathering and erosion
A scientist is studying the action of RNA polymerase during transcription. He wants to know what type of bases are added to the growing mRNA by RNA polymerase.
A:bases complementaryto the template DNA
B:bases the same as those in the template
C:bases similar to the template DNA
What is the energy conversion that occurs in cellular respiration?
Chemical energy in glucose is converted to light energy.
Light energy is converted to chemical energy in glucose.
Energy in glucose is converted to packets of stored energy in the organism.
Packets of stored energy are converted to chemical energy in glucose.
What is the definition of mitosis?
which three elements do all four biomolecules have in common
The three elements that are common in all four organic molecules are carbon, hydrogen, and oxygen.
The three forms of almost all chemical structures needed for life, including carbohydrates, lipids, and proteins.
The four main classes of organic compounds are - carbohydrates, lipids, proteins, and nucleic acids that are essential to the proper functioning of all living things are known as polymers or macromolecules.All of these compounds are built primarily of carbon, hydrogen, and oxygen but in different ratios. They are produced by cells and living organisms.Biomolecules contain various elements like carbon, nitrogen, hydrogen, oxygen, sulfur, and phosphorus.Among all these elements, carbon, oxygen and hydrogen are commonly found in all biomolecules.Thus, The three forms of almost all chemical structures needed for life, including carbohydrates, lipids, and proteins.
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A certain cell can no longer package and release materials out of the cell. which of the cells organelles is not working?
Answer:
golgi apparatus
Explanation:
A group of students has performed an experiment to study the ideal temperature for the maximum activity of biological enzymes. Enzymes are specific to their environment; in other words, they work best at a specific pH and specific temperature. Which graph represents optimum enzyme activity at approximately 37 degrees Celsius?
Please refer to figures below.
Answer;
The first graph represents such an enzyme.
Explanation;
This is because the enzyme demonstrates greatest activity at approximately 37 °C but then the activity starts to decrease due to the denaturing of the enzyme.
As the temperature increases, so does the rate of reaction. But very high temperatures denature enzymes. The graph shows the typical change in an enzyme's activity with increasing temperature. The enzyme activity gradually increases with temperature up to around 37 ºC, or body temperature. Then the activity decreases above 37 ºC, because above this temperature the enzymes will denatured.
Digestion takes place inside blank containing blank
Digestion occurs inside organs that contain various enzymes. These enzymes, found in organs like the stomach and intestines, help break down food into nutrients. The enzymes lactase, maltase, and sucrase in the small intestines, for example, assist in the digestion of sugars.
Explanation:Digestion takes place inside structures called organs containing various enzymes. So, the full sentence should read: Digestion takes place inside organs containing enzymes. The digestive system, for instance, is made up of organs such as the stomach and intestines where enzymes break down food into nutrients. In the stomach, pepsin helps digest proteins, while in the small intestines, enzymes like lactase, maltase, and sucrase aid in the digestion of sugars.
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Because cosmologists can't go out into space and test all of their theories, they must depend on the cosmological principle. This principle assumes that _____.
Answer:
Answered
Explanation:
Because cosmologists can't go out into space and test all of their theories, they must depend on the cosmological principle. This principle assumes that
The laws of physics remain steady and same through out the entire universe. This is why they test all of their theory on Earth. The do believe on cosmological principles. The Principles remain the same in the entire universe.
Describe two themes that connect all the information in biology. use an example to help explain the theme
Answer:
Two themes that connect all the information in biology are structure and function.
Explanation:
In word Biology, bio means life and logy means study. The study of life is Biology. The study involves structure and function features of living things. The structure and function tells us about the interaction of living organisms with the environment. For example, the large organisms have small surface area and small organisms have large surface area. This helps in heat lost or conservation.